Dimension: 50x50x42mm (length x width x height・ excluding potentiometer handle)・ ultra-small size suitable for any space.<br />Voltage: DC 9-15V・ recommended DC voltage 12V・ current 2A above<br />Power: 15W +15 W<br />Output Impedance :4-8 <br />Upgraded version of the radiator・ wider and thicker・ better cooling effect<br />Weight: 50g<br />This is a 12V single power supply TDA7297 amplifier board B board・ AC / DC・ 2.0 / dual channel / stereo・12V/2A when using・ the output power of 15W +15 W・ peak up 25W +25 W・  can be accessed by two 4-8 10-50W speakers・ a large volume of small size・ high signal to noise ratio.<br />Package Contents:1 x TDA7297 Version B Amplifier Board